CN206799197U - A kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system - Google Patents

A kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system Download PDF

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CN206799197U
CN206799197U CN201720578671.5U CN201720578671U CN206799197U CN 206799197 U CN206799197 U CN 206799197U CN 201720578671 U CN201720578671 U CN 201720578671U CN 206799197 U CN206799197 U CN 206799197U
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tower
desulfurization wastewater
concentration
flue gas
deduster
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张华东
栾涛
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张华东
栾涛
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Abstract

The utility model discloses a kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system, in order to solve the problems such as existing desulfurization wastewater treatment technology generally existing with high investment, high energy consumption, high operating cost, up to standard difficult discharge of wastewater, the technology has simple system, small investment, operating cost is low, and without deduster etching problem, all dirt in desulfurization wastewater can be effectively handled, reaches the purpose of desulfurization wastewater zero-emission.Technical scheme is:Flue gas air inlet preheater after denitration is exchanged heat with air, flue gas after heat exchange enters deduster dedusting, flue gas after dedusting enters concentration tower, concentration is heated to the desulfurization wastewater from desulfurizing tower, desulfurization wastewater after concentration, which enters in crystallizing tower, to be atomized, desulfurization wastewater after atomization is evaporated crystallization under the heat effect of the flue gas from SCR denitration reaction tower, and the fine solid particles thing or salt and dust after crystallization enter deduster under flue gas drive and removed.

Description

A kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system
Technical field
The utility model belongs to the technical field for carrying out condensing crystallizing processing to desulfurization wastewater with flue gas, and in particular to a kind of Undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system.
Background technology
Wet desulfurization of flue gas by limestone-gypsum method is because of technology maturation, desulfuration efficiency is high, stable and low cost and other advantages It is widely used in thermal power plant.Due to containing multiple element including heavy metal in coal, as F, Cl, Cd, Cr, Hg, As (fluorine, chlorine, cadmium, chromium, mercury, arsenic) etc., and these elements can form multiple compounds during burning of coal, wherein Part of compounds can be with fume emission.In the unit of wet method fume desulfurizing system is provided with, these materials can be dissolved in desulfurization In the absorbing liquid of tower, and with the recycling of absorbing liquid, the impurity in absorbing liquid is constantly concentrated, as suspension (SS) is reachable 60000mg/L, Cl-Concentration may be up to 20000mg/L.On the one hand the impurity of absorbing liquid middle and high concentration have impact on the steady of desulphurization system Fixed operation and desulfuration efficiency, on the other hand also influence whether the quality of gypsum.Therefore, in the operation of wet method fume desulfurizing system Timing is needed to discharge a part of waste water out of system in journey, to maintain the material balance of serum recycle system, by the miscellaneous of absorbing liquid Matter concentration is maintained within operation feasible value.
As country causes to the attention of water pollution control and the increase of management, the processing and discharge of desulfurization wastewater It is extensive to pay attention to.Processing to desulfurization wastewater mainly has chemical precipitation method, biological treatment, membrane separation process, absorption method, flue to steam Send out the technologies such as facture, electric flocculation method and evaporative crystallization.
At present, domestic thermal power plant is generally using chemical precipitation method processing wet desulphurization waste water.But there is system in the technique Unite huge, cost of investment is higher, can not effectively remove Cl-, it is necessary to constantly add various medicaments, sludge yield is big, and in reality More problem be present in the operation of border, cause wastewater treatment not thorough, part water quality index difficulty up to standard, and handle water outlet saliferous The shortcomings of amount is high, and directly discharge easily causes secondary pollution.Electric flocculation can effectively handle heavy metal, and possess equipment arrangement more It is compact, treatment agent expense is relatively low, the treatment effect advantage such as preferably, but electric flocculation method is there is also many deficiencies, the electricity as Flocculation can not remove the chlorion in waste water, and high frequency electric flocculation then has the shortcomings of power consumption is higher, and electrode life is short.Steam It is simple to send out crystallization treatment technological process, it is preferable to evaporate the water quality of recycle-water, but the problems such as Incrustation of pipe, operating cost is high be present. Flue evaporated logos receives extensive attention as a kind of desulfurization wastewater zero-discharge technology, and this method is will be de- using nozzle Sulphur waste water is atomized, and is injected in the flue between air preheater and deduster, utilizes the heat of flue gas in deduster gas approach Desulfurization wastewater is evaporated by amount, the pollutant in waste water is converted into fine solid particles crystal or salt, so as to flying dust one Rise and be captured and remove in deduster, realize the purpose of desulfurization wastewater zero-emission.But due to the temperature of deduster porch flue gas Spend relatively low, usually less than 130 DEG C, time required for evaporating waste water length, desulfurization wastewater possibly can not be complete before deduster is entered Pervaporation, so as to cause the corrosion of flue and electric precipitation, ESP Efficiency can be caused to decline to a great extent when serious, and at present Domestic Generator Set is often provided with low low-level (stack-gas) economizer in the flue between air preheater and deduster, causes deduster The flue-gas temperature of entrance is lower, and generally below 100 DEG C, this further limits the engineer applied of this method.Existing desulfurization The problems such as wastewater processing technology generally existing is with high investment, high energy consumption, high operating cost, up to standard difficult discharge of wastewater.
Utility model content
For technical problem present in above-mentioned prior art, the purpose of this utility model is to provide a kind of undersaturation flue gas Condensing crystallizing desulfurization wastewater zero-discharge treatment system and method.The desulfurization wastewater zero-discharge treatment system is using deduster and taken off The relatively low flue gas of temperature between sulphur tower carries out temperature raising and concentration to desulfurization wastewater, and the desulfurization wastewater after concentration decrement enters crystallization Tower, the desulfurization wastewater after concentration is evaporated using a small amount of temperature in SCR denitration reaction tower exit higher flue gas, makes its steaming Dry and hard crystalline substance.Fine solid particles thing or salt after crystallization enter deduster, are caught in deduster by electrode, and eventually fall into Ash bucket outside flying dust with arranging, it is achieved thereby that the zero-emission of desulfurization wastewater.
In order to solve the above technical problems, the technical solution of the utility model is:
A kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system, including SCR denitration reaction tower, air are pre- Hot device, crystallizing tower, deduster, concentration tower and desulfurizing tower, the exhanst gas outlet of SCR denitration reaction tower are divided into tie point and second The gas approach connection of road, tie point and air preheater, exhanst gas outlet and the deduster smoke inlet of air preheater connect Connect, the gas approach connection of deduster exhanst gas outlet and concentration tower, the exhanst gas outlet of concentration tower and the gas approach of desulfurizing tower connect Connect;The gas approach of second branch road and crystallizing tower is connected, and the exhanst gas outlet of crystallizing tower is connected with deduster gas approach, desulfurization system The spraying layer of the outer discharge pipe of desulfurization wastewater and concentration tower connects in system;
Flue gas air inlet preheater after denitration is exchanged heat with air, and the flue gas after heat exchange removes into deduster Dirt, the flue gas after dedusting enter concentration tower, heat concentration to the desulfurization wastewater from desulfurizing tower, the desulfurization wastewater after concentration enters In crystallizing tower, crystallization is evaporated under the heat effect of the flue gas from SCR denitration reaction tower, the fine solid particles thing after crystallization Or salt and dust enter deduster under flue gas drive and removed.
Desulfurization wastewater in the concentration tower between deduster and desulfurizing tower with the low temperature undersaturation cigarette from house outlet Gas is mixed, and concentration is evaporated to desulfurization wastewater using the used heat of low temperature undersaturation flue gas, because desulfurization wastewater temperature raising is dense Heat is fume waste heat used by contracting, reduces the cost of wastewater treatment, while the low-temperature flue gas of house outlet is deficient full And flue gas, provide possibility for the evaporation of desulfurization wastewater;Vapor caused by desulfurization wastewater evaporation enters desulfurizing tower with flue gas, and Desulfurizing tower and flue thereafter and chimney did preservative treatment, it is possible to avoid the corrosion to follow-up equipment.
Desulfurization wastewater after concentration decrement enters crystallizing tower, utilizes a small amount of high-temperature flue gas in SCR denitration reaction tower exit Desulfurization wastewater after concentration is evaporated, it is evaporated crystallization;Fine solid particles thing or salt after crystallization is in company with flue gas Into deduster entrance, caught in deduster by electrode, and eventually fall into ash bucket with being arranged outside flying dust, it is achieved thereby that desulfurization is given up The zero-emission of water.On the one hand, the desulfurization wastewater of high-temperature flue gas processing is reduced by concentration, so to high-temperature flue gas energy Demand reduces, that is, reduces energy expenditure;On the other hand, the flue gas introduced in crystallizing tower is directly from SCR denitration reaction tower, Do not exchanged heat with air, the temperature of flue gas is higher, i.e. the evaporative crystallization of the desulfurization wastewater after concentration is in higher temperature What region was carried out, evaporation rate is improved, reduces the time needed for evaporation, ensure that waste water can be complete before deduster is entered Portion evaporates, and avoids its corrosion to deduster.
Further, spraying layer is provided with the top of concentration tower, bottom is provided with concentration basin, between spraying layer and concentration basin Connected by circulation line, circulating pump is provided with circulation line.
Due to the limited height of concentration tower, limited time of the desulfurization wastewater during decline with smoke contacts, evaporation The limitation of concentration, so, desulfurization wastewater circulating-heating is evaporated, the concentrating degree of desulfurization wastewater is improved, is easy to follow-up Evaporative crystallization.
Further, the bottom of the concentration basin is provided with dividing plate, back taper mud guiding slot and sludge outlet, and the dividing plate is Conical surface dividing plate, the top of back taper mud guiding slot is covered in, is fixed on by supporting leg on the housing of concentration basin, and dividing plate and concentration basin Gap is provided between housing;The sludge outlet is arranged at the least significant end of back taper mud guiding slot.
Due to needing to concentrate the desulfurization wastewater circulating-heating in concentration basin, under the pumping agitaion of pump, sludge quilt It is dispersed in desulfurization wastewater, when the desulfurization wastewater after concentration is delivered into the atomizer of crystallizing tower, the sludge in desulfurization wastewater Easily cause the blocking of atomizer.Conical surface dividing plate is set in the bottom of concentration basin, stayed between conical surface dividing plate and concentration basin individual There is gap, the sludge of sedimentation can be imported into back taper mud guiding slot by conical surface dividing plate by gap, conical surface dividing plate and back taper Mud guiding slot surrounds the space of a relative closure, can hinder the disturbance of desulfurization wastewater to the influence of sludge, be advantageous to sludge with The separation of desulfurization wastewater, be advantageous to prevent the blocking of nozzle in concentration tower.
Further, the sludge outlet is connected with the outer discharge pipe of sludge.
Further, in concentration tower, flue gas and desulfurization wastewater are countercurrent flow.
Further, in concentration tower, flue gas and desulfurization wastewater are downstream heat transfer.
Further, in concentration tower, the number of plies of the spraying layer is 1-3 layers.
Further, multiple spray heads, a diameter of 3- for the drop that spray head sprays are provided with every layer of spraying layer 6mm.The spray head that concentration tower uses is sprayed to obtain larger-diameter drop, and water droplet particle can be avoided to take concentration out of by flue gas Tower, influence concentrated effect.
Further, it is provided with filter on the pipeline between concentration basin and the atomizer of crystallizing tower.To filter out Bulk impurity that may be present in concentrating spent liquor, to avoid plug nozzle.
Further, multiple atomizers are provided with crystallizing tower, atomizer is steam atomization nozzle, compressed air Atomizer or atomizing nozzle.
Further, the deduster is electric cleaner.
A kind of undersaturation flue gas condensing crystallizing zero emission treatment of desulfured waste water, comprises the following steps:
Flue gas air inlet preheater after denitration is exchanged heat with air, and the flue gas after heat exchange removes into deduster Dirt, the flue gas after dedusting enter concentration tower, heat concentration to the desulfurization wastewater from desulfurizing tower, the desulfurization wastewater after concentration enters It is atomized in crystallizing tower, the desulfurization wastewater after atomization is evaporated crystallization under the heat effect of the flue gas from SCR denitration reaction tower, knot Fine solid particles thing or salt and dust after crystalline substance enter deduster under flue gas drive and removed.
Further, the drop particle diameter that desulfurization wastewater is formed in concentration tower through spray is 3-6mm.
Further, the temperature of the flue gas in concentration tower is 80 DEG C -150 DEG C.
Water droplet and 80 DEG C~150 DEG C of low temperature undersaturation flue gas mixed heat transfer in tower, after water droplet is heated evaporation and concentration, Fall into the concentration basin of concentration tower bottom;Waste water in concentration basin is sent to the spray equipment of top of tower by circulating pump again, is concentrating In tower, desulfurization wastewater completes concentration process by repeatedly circulation.
Further, in crystallizing tower, the droplets particles particle diameter after desulfurization wastewater atomization is less than 150 μm.
Further, it is 300 DEG C -400 DEG C into the temperature of the flue gas in crystallizing tower.
Further, into the 1-3% that the flue gas flow in crystallizing tower is boiler smoke total amount.
Further, crystallizing tower exit, the temperature of flue gas is 160-180 DEG C.
The beneficial effects of the utility model are:
Concentration decrement is carried out to desulfurization wastewater using the used heat of undersaturation low-temperature flue gas, system operation can be effectively reduced Cost, while the wet flue gas for completing heat exchange evaporation enters desulfurizing tower, and desulfurizing tower and subsequent flue and chimney did anti-corrosion Processing, it is possible to avoid the corrosion to follow-up equipment.Desulfurization wastewater after concentration is evaporated in crystallizing tower through high-temperature flue gas, is protected Demonstrate,prove desulfurization wastewater to be evaporated completely before deduster is entered, avoid its corrosion to flue and electric cleaner and to deduster The harmful effect of dust removing effects, because the desulfurization wastewater of high-temperature flue gas evaporation is reduced by concentration, so the high temperature needed Exhaust gas volumn is also reduced accordingly, has the advantage for saving Energy Consumption In A Typical.The technology has simple system, small investment, operation Cost is low, can effectively handle all dirt in desulfurization wastewater, can especially remove Cl-, reach desulfurization wastewater zero-emission Put.Water capacity into the flue gas of desulfurizing tower can be increased using the technology, reduce demand of the desulfurizing tower to process water.The skill Art is lower than the flue evaporation process technical operation cost of routine, and without deduster etching problem;Especially for being already installed with The boiler controller system of low low-level (stack-gas) economizer, boiler operatiopn is had no adverse effects using the technology.
Place of the utility model particularly suitable for coal-burning power plant's wet desulfurization of flue gas by limestone-gypsum method system desulfurization wastewater Reason.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is the structural representation of undersaturation flue gas condensing crystallizing desulfurization wastewater Zero discharging system of the present utility model;
Fig. 2 is the structural representation of the bottom concentration basin of concentration tower of the present utility model.
Wherein:1. boiler economizer, 2. air preheaters, 3. flue gas flow regulating valves, 4.SCR denitration reaction towers, 5. Flue, 6. crystallizing towers, 7. atomizers, 8. dedusters, 9. concentration waste water connecting pipes, 10. boiler induced-draft fans, 11. thickened wastes Water water pump, 12. filters, 13. concentration basins, the outer discharge pipe of 14. sludge, 15. concentration towers, 16. spray equipments, 17. desulfurization wastewaters Circulating pump, 18. desulfurization wastewater circulating lines, 19. desulfurization wastewater inlet ducts, 20. desulfurizing towers, 21. chimneys, 22. dividing plates, 23, Back taper mud guiding slot, 24, sludge outlet.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As shown in figure 1, initially entering SCR denitration reaction tower 4 from the flue gas that boiler economizer 1 exports, carried out in tower Denitration reaction, to remove the nitrogen oxides in flue gas;Flue gas after denitration is partly into the heating boiler of air preheater 2 Air required for burning, the flue gas after cooling enter electric cleaner 8, then enter concentration tower 15 through boiler induced-draft fan 10. In concentration tower 15, using the low temperature undersaturation flue gas (80 DEG C -150 DEG C) from house outlet to the warp from desulfurizing tower 20 The desulfurization wastewater water droplet that the spray of spray equipment 16 is formed carries out Hybrid Heating evaporation and concentration, and the particle diameter of the waste water water droplet of whereabouts is 3- It 6mm, because the waste water water droplet particle of whereabouts is big, can not be taken away, and be fallen into the concentration basin 13 of the bottom of concentration tower 15 by flue gas. The spraying layer of concentration tower 15 can be individual layer, or two layers or three layers.Flue gas after desulfurizing tower desulfurization is from chimney 21 Discharge.
It is required that desulfurization wastewater repeatedly circulates in concentration tower 15, to improve its concentration rate, for this in concentration basin and spray Desulfurization wastewater circulating line 18 is connected between device, desulfurization wastewater circulating pump 17 is installed on pipeline, followed using desulfurization wastewater Endless tube road 18 and desulfurization wastewater circulating pump 17 enable desulfurization wastewater to be carried out between spray equipment 16 and concentration basin 13 repeatedly Circulation, complete concentration process.
As shown in Fig. 2 the bottom of concentration basin is provided with dividing plate 22, back taper mud guiding slot 23 and sludge outlet 24, it is described every Plate 22 is conical surface dividing plate, is covered in the top of back taper mud guiding slot 23, is fixed on by supporting leg on the housing of concentration basin 13, and every Gap is provided between plate 22 and concentration basin housing;The sludge outlet 24 is arranged at the least significant end of back taper mud guiding slot 23.It is de- After sulphur waste water is concentrated, the solid slag in waste water deposits in concentration basin 13, and conical surface dividing plate can pass through the sludge of sedimentation Gap is imported into back taper mud guiding slot, and conical surface dividing plate and back taper mud guiding slot 23 surround the space of a relative closure, can be with Influence of the disturbance of desulfurization wastewater to sludge is hindered, is advantageous to the separation of sludge and desulfurization wastewater, is advantageous to prevent in concentration tower The blocking of nozzle.Sludge outlet 24 is connected with the outer discharge pipe of sludge, the sludge that will can be deposited at any time in back taper mud guiding slot 23 Outer row.
Meanwhile the exit of SCR denitration reaction tower 4 is connected with flue gas branch flue 5, the branch flue is through flue gas flow regulating valve 3 It is connected with crystallizing tower 6, the effect of flue gas flow regulating valve 3 is exhaust gas volumn of the regulation into crystallizing tower 6.In crystallizing tower 6, come from The concentration desulfurization wastewater of concentration tower 15 is sprayed into tower through atomizer 7, and the particle diameter of the droplet after atomization is less than 150 μm, and and tower (300 DEG C -400 DEG C) progress mixed heat transfers of interior high-temperature flue gas, using high-temperature flue gas by the small mist of desulfurization wastewater after atomization Heat is added dropwise to be evaporated, crystallizes into solid particle, and the entrance of deduster 8 is discharged into flue gas, and the temperature of flue gas be reduced to 200 DEG C with Under, between optimum temperature is 160-180 DEG C.Into the high-temperature flue gas flow exported from SCR denitration reaction tower 4 of crystallizing tower 6 Account for the 1-3% of whole amounts of boiler smoke six.Atomizer 7 can be steam atomization nozzle or compressed air atomization spray Mouth, or atomizing nozzle.
The concentrated waste water connecting pipe 9 of concentration desulfurization wastewater in concentration basin 13, and on the connecting pipe 9 Filter 12 and concentration waste water water pump 11 enter the atomizer 7 of crystallizing tower 6, complete to be evaporated the process of crystallization in crystallizing tower 6; It is to filter out bulk impurity that may be present in concentrating spent liquor to concentrate the purpose that filter 12 is installed on waste water connecting pipe, is avoided Plug nozzle.Solid impurity after crystallization enters deduster entrance with flue gas, and is caught in deduster 12 by electrode, and finally Ash bucket is fallen into being arranged outside flying dust.Desulfurization wastewater enters concentration tower 15 through desulfurization wastewater inlet duct 19.Completed in concentration tower 15 Wet flue gas after heat exchange enters desulfurizing tower 20, is most discharged into afterwards through chimney 21 in atmospheric environment.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.

Claims (8)

  1. A kind of 1. undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system, it is characterised in that:Reacted including SCR denitration Tower, air preheater, crystallizing tower, deduster, concentration tower and desulfurizing tower, the exhanst gas outlet of SCR denitration reaction tower are divided into first The gas approach connection of road and the second branch road, tie point and air preheater, the exhanst gas outlet and deduster of air preheater Smoke inlet connects, and the gas approach of deduster exhanst gas outlet and concentration tower connects, the exhanst gas outlet of concentration tower and desulfurizing tower Gas approach connects;The gas approach of second branch road and crystallizing tower connects, exhanst gas outlet and the deduster gas approach of crystallizing tower Connect, the spraying layer of the outer discharge pipe of desulfurization wastewater and concentration tower connects in desulphurization system;
    Flue gas air inlet preheater after denitration is exchanged heat with air, and the flue gas after heat exchange enters deduster dedusting, Flue gas after dedusting enters concentration tower, heats concentration to the desulfurization wastewater from desulfurizing tower, the desulfurization wastewater after concentration enters knot In brilliant tower, crystallization is evaporated under the heat effect of the flue gas from SCR denitration reaction tower, fine solid particles thing after crystallization or Salt and dust enter deduster under flue gas drive and removed.
  2. 2. desulfurization wastewater zero-discharge treatment system according to claim 1, it is characterised in that:It is provided with the top of concentration tower Spraying layer, bottom are provided with concentration basin, connected between spraying layer and concentration basin by circulation line, are provided with and follow on circulation line Ring pump.
  3. 3. desulfurization wastewater zero-discharge treatment system according to claim 2, it is characterised in that:The bottom of the concentration basin is set Dividing plate, back taper mud guiding slot and sludge outlet are equipped with, the dividing plate is conical surface dividing plate, is covered in the top of back taper mud guiding slot, It is fixed on by supporting leg on the housing of concentration basin, and gap is provided between dividing plate and concentration basin housing;The sludge outlet is set It is placed in the least significant end of back taper mud guiding slot.
  4. 4. desulfurization wastewater zero-discharge treatment system according to claim 1, it is characterised in that:In concentration tower, flue gas is with taking off Sulphur waste water is countercurrent flow or downstream heat transfer.
  5. 5. desulfurization wastewater zero-discharge treatment system according to claim 1, it is characterised in that:In concentration tower, the spray The number of plies of layer is 1-3 layers.
  6. 6. desulfurization wastewater zero-discharge treatment system according to claim 5, it is characterised in that:It is provided with every layer of spraying layer Multiple spray heads, a diameter of 3-6mm for the drop that spray head sprays.
  7. 7. desulfurization wastewater zero-discharge treatment system according to claim 1, it is characterised in that:It is provided with crystallizing tower multiple Atomizer, atomizer are steam atomization nozzle, compressed air atomizer or atomizing nozzle.
  8. 8. desulfurization wastewater zero-discharge treatment system according to claim 7, it is characterised in that:The spray of concentration basin and crystallizing tower Filter is provided with pipeline between drenching layer.
CN201720578671.5U 2017-05-23 2017-05-23 A kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system Active CN206799197U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107032428A (en) * 2017-05-23 2017-08-11 张华东 A kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system and method
CN108190986A (en) * 2018-02-06 2018-06-22 华电电力科学研究院有限公司 A kind of flue is classified pre- thermal evaporation desulfurization wastewater Zero discharging system and its method of work
CN110627146A (en) * 2018-11-29 2019-12-31 国家电投集团远达环保工程有限公司重庆科技分公司 Desulfurization wastewater treatment system and desulfurization wastewater treatment method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107032428A (en) * 2017-05-23 2017-08-11 张华东 A kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system and method
CN108190986A (en) * 2018-02-06 2018-06-22 华电电力科学研究院有限公司 A kind of flue is classified pre- thermal evaporation desulfurization wastewater Zero discharging system and its method of work
CN110627146A (en) * 2018-11-29 2019-12-31 国家电投集团远达环保工程有限公司重庆科技分公司 Desulfurization wastewater treatment system and desulfurization wastewater treatment method
WO2020108135A1 (en) * 2018-11-29 2020-06-04 国家电投集团远达环保工程有限公司重庆科技分公司 Desulfurization wastewater treatment system and desulfurization wastewater treatment method

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